Although a PSP flaw is very unlikely to harm an individual user, it puts the US and it's intellectual property at risk from foreign actors such as Russia or China. And many engineering firms do not have the resources of the NSA to protect against such threats.
Additionally, a PSP or Intel ME related hack involving a SCADA system would not be discovered until it's too late, with potentially extremely severe consequences. AMD is advertising the processor as being a security device that is intended to enhance system security. If such a SCADA hack involving the PSP was to result in loss of life for example, what would AMD's liability be in such circumstances, where the 'security device' itself has enabled the system to be hacked in the first place? Taking into account that the 'security device' cannot be disabled by the SCADA operator, so they have no choice to use it.
That is why I believe the PSP and ME should be removed completely. Should that not be possible it should be replaced with a processor that is transparent to its internal operation.
Additionally, a PSP or Intel ME related hack involving a SCADA system would not be discovered until it's too late, with potentially extremely severe consequences. AMD is advertising the processor as being a security device that is intended to enhance system security. If such a SCADA hack involving the PSP was to result in loss of life for example, what would AMD's liability be in such circumstances, where the 'security device' itself has enabled the system to be hacked in the first place? Taking into account that the 'security device' cannot be disabled by the SCADA operator, so they have no choice to use it.
That is why I believe the PSP and ME should be removed completely. Should that not be possible it should be replaced with a processor that is transparent to its internal operation.